This feature is supported in RadonDB MySQL Kubernetes 2.1.0 and later versions.
Quick Start
Step 1 Install Operator.
Install the operator named test:
$ helm install test charts/mysql-operator
Step 2 Configure backup for S3.
Add the secret file.
kind: Secret
apiVersion: v1
metadata:
name: sample-backup-secret
namespace: default
data:
s3-endpoint: aHR0cDovL3MzLnNoMWEucWluZ3N0b3IuY29t
s3-access-key: SEdKWldXVllLSENISllFRERKSUc=
s3-secret-key: TU44TkNUdDJLdHlZREROTTc5cTNwdkxtNTlteE01blRaZlRQMWxoag==
s3-bucket: bGFsYS1teXNxbA==
type: Opaque
The value s3-xxxx is base64-encoded. You can obtain the encoded value as follows.
$ echo -n "hello"|base64
Create the Secret in Kubernetes.
$ kubectl create -f config/samples/backup_secret.yaml
Add the backupSecretName property in mysql_v1alpha1_mysqlcluster.yaml.
spec:
replicas: 3
mysqlVersion: "5.7"
backupSecretName: sample-backup-secret
...
Create the backup file mysql_v1alpha1_backup.yaml.
apiVersion: mysql.radondb.com/v1alpha1
kind: Backup
metadata:
name: backup-sample1
spec:
# Add fields here
hostname: sample-mysql-0
clustname: sample
| Parameter | Description |
|---|---|
| hostname | The pod name in the cluster |
| clustname | The cluster name |
Step 3 Start cluster.
$ kubectl apply -f config/samples/mysql_v1alpha1_mysqlcluster.yaml
Step 4 Start backup.
Start the backup after the cluster is successfully started.
$ kubectl apply -f config/samples/mysql_v1alpha1_backup.yaml
Uninstallation
Uninstalling operator
Uninstall the cluster named test:
$ helm uninstall test
$kubectl delete -f config/samples/mysql_v1alpha1_backup.yaml
Uninstalling cluster
Uninstall the cluster named sample:
$ kubectl delete mysqlclusters.mysql.radondb.com sample
Uninstalling CRD
$ kubectl delete customresourcedefinitions.apiextensions.k8s.io mysqlclusters.mysql.radondb.com
Restore of cluster from backup
Check the S3 bucket and set the RestoreFrom property in the YAML file to the backup directory, for example, backup_2021720827.
...
spec:
replicas: 3
mysqlVersion: "5.7"
backupSecretName: sample-backup-secret
restoreFrom: "backup_2021720827"
...
Then run the following command to restore a cluster from the backup_2021720827 copy in the S3 bucket.
$ kubectl apply -f config/samples/mysql_v1alpha1_mysqlcluster.yaml
- To recover a cluster from an NFS server, operate as follows.
Creating image
$ docker build -f Dockerfile.sidecar -t acekingke/sidecar:0.1 . && docker push acekingke/sidecar:0.1
$ docker build -t acekingke/controller:0.1 . && docker push acekingke/controller:0.1
You can replace acekingke/sidecar:0.1 with your own label.
Deploying your own image
$ make manifests
$ make install
$ make deploy IMG=acekingke/controller:0.1 KUSTOMIZE=~/radondb-mysql-kubernetes/bin/kustomize
